134 ACHATININjK. 



Genus PSEUDACHATINA, Albers. 



Shell solid, ovately turreted ; whorls 8 9, the last 

 nearly equal to | of the length ; columella somewhat 

 intorted, arcuately truncate ; aperture lunately oval ; peris- 

 tome expanded, the margins joined by a callus. 



Ex. P. Downesii, Gray, pi. 75, fig. 1. 



One species described is from the Island of Fernando Po, 

 on the west coast of Africa, the other is from Old Calabar. 



Species of Pseudachatina. 

 Downesii, Gray. Wrightii, Sow. Jun. 



Genus COLUMNA, Perry. 



Shell sinistrorsal or dextral, subulately turreted, decus- 

 sately granulated; apex obtuse, whorls constricted at the 

 suture, the lower impressed in the middle ; aperture elon- 

 gated, auriform, narrowed posteriorly ; columella callous, 

 loosely spirally twisted, forming an open canal along the 

 length of the spire, the base abruptly truncate ; peristome 

 simple, straight, acute. 



Syn. Acicula, Blainv., not Risso or Hartm. 



Ex. C. flainmea, Marty it , pi. 74, fig. 1. Shell, C. 

 flammea, fig. 1, a. 



The typical species of this genus is found in Prince's 

 Island, living among dead leaves in thick Ebony woods; the 

 other species are from California and Prince's Island. 



